class NullBackendTest in Drupal 9

Tests the cache NullBackend.

@group Cache

Hierarchy

• class \Drupal\Tests\UnitTestCase extends \PHPUnit\Framework\TestCase uses \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait, PhpUnitCompatibilityTrait, PhpUnitWarnings
  • class \Drupal\Tests\Core\Cache\NullBackendTest

File

core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php, line 13

Namespace

Drupal\Tests\Core\Cache

class NullBackendTest extends UnitTestCase {

  /**
   * Tests that the NullBackend does not actually store variables.
   */
  public function testNullBackend() {
    $null_cache = new NullBackend('test');
    $key = $this
      ->randomMachineName();
    $value = $this
      ->randomMachineName();
    $null_cache
      ->set($key, $value);
    $this
      ->assertFalse($null_cache
      ->get($key));
  }

}

Members

Name	Modifiers	Type	Description	Overrides
NullBackendTest::testNullBackend	public	function	Tests that the NullBackend does not actually store variables.
PhpUnitWarnings::$deprecationWarnings	private static	property	Deprecation warnings from PHPUnit to raise with @trigger_error().
PhpUnitWarnings::addWarning	public	function	Converts PHPUnit deprecation warnings to E_USER_DEPRECATED.
UnitTestCase::$randomGenerator	protected	property	The random generator.
UnitTestCase::$root	protected	property	The app root.	1
UnitTestCase::assertArrayEquals Deprecated	protected	function	Asserts if two arrays are equal by sorting them first.
UnitTestCase::getClassResolverStub	protected	function	Returns a stub class resolver.
UnitTestCase::getConfigFactoryStub	public	function	Returns a stub config factory that behaves according to the passed array.
UnitTestCase::getConfigStorageStub	public	function	Returns a stub config storage that returns the supplied configuration.
UnitTestCase::getContainerWithCacheTagsInvalidator	protected	function	Sets up a container with a cache tags invalidator.
UnitTestCase::getRandomGenerator	protected	function	Gets the random generator for the utility methods.
UnitTestCase::getStringTranslationStub	public	function	Returns a stub translation manager that just returns the passed string.
UnitTestCase::randomMachineName	public	function	Generates a unique random string containing letters and numbers.
UnitTestCase::setUp	protected	function		308
UnitTestCase::setUpBeforeClass	public static	function